Chemically anchored two-dimensional-SiO _x /zero-dimensional-MoO₂ nanocomposites for high-capacity lithium storage materials.

ABSTRACT: Silicon oxides are promising alternatives for graphite anodes in lithium-ion batteries. SiO _x nanosheets exhibit favorable anodic performances, including outstanding capacity retention and dimensional stability, due to their unique two-dimensional (2D) microstructures, but suffer from low specific capacity and poor initial coulombic efficiency. Here we demonstrate that chemically anchoring of molybdenum dioxide (MoO₂) nanoparticles on the surface of 2D-SiO _x nanosheets via a Mo-O-Si bond boosts both the reversible capacity and initial coloumbic efficiency without sacrificing the useful properties of 2D-SiO _x nanosheets. The enhancements can be attributed to the introduction of a zero-dimensional MoO₂ nano-ob

SUBMITTER: Kim S 

PROVIDER: S-EPMC9054525 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature